package com.lbc.state;

import java.text.SimpleDateFormat;
import java.util.Date;

//  模拟倒计时
public class TestSleep2 {

    public static void main(String[] args) throws InterruptedException {
//        TestSleep2.tenDown();
        //  打印当前系统时间
        Date date = new Date(System.currentTimeMillis());  // 当前系统的时间
        while (true) {
            Thread.sleep(1000);
            System.out.println(new SimpleDateFormat("HH:mm:ss").format(date));
            date = new Date(System.currentTimeMillis()); // 更新当前系统的时间
        }
    }

    public static void tenDown() throws InterruptedException {
        int num = 10;
        while (true) {
            Thread.sleep(1000);
            System.out.println(num--);
            if (num <= 0) {
                break;
            }
        }
    }

}
